metadata, data and processingLog."u" or "v" for column data, or
"latitude" or "longitude" for scalars. (The names of the
columns are displayed with show(). The name of the source file
is found with "filename".} cm[["u"]] <- rep(35,100).}
show method (e.g.
show(cm)) displays information about the object.}
read.cm. Statistical summaries are provided with
summary.cm, while overviews are provided by show.
Plots are provided with plot.cm.